Automatic device for opening or closing a multi-folding umbrella

Abstract

An automatic device for opening or closing multi-folding umbrella is provided, which comprises a umbrella shaft, a control handle, an upper and a lower nest, a rib assembly, a spring for closing, a spring for opening and a dragline in the shaft; a button with a reset spring and a snap convex is installed on the control handle and a rocker with a pushing spring can lock and release the step-cone; when the umbrella is closed, the snap convex of the button falls into the locking recess on the lower part of the upper tube; press the button, and it moves inwards but does not touch the rocker, the snap convex departs from the locking recess on the exterior wall of the upper tube and the umbrella is unfurled under the action of the spring for opening; press the button again, the step-cone is released, the spring for closing pulls the rib assembly to push downwards the lower nest back to the state of closing umbrella. The invented device increases the length space of the shaft to hold the spring for opening, therefore, it is especially suitable for the four-folding or five-folding automatic open and close umbrella.

1. An automatic device for opening or closing multi-folding umbrella, comprising:
 an umbrella shaft that contains a lower tube ( 11 ), a middle tube ( 12 ) with one segment or more segments and a upper tube ( 13 ), adapted such that the lower tube ( 11 ) is received in the middle tube ( 12 ), and the middle tube ( 12 ) is in turn received in the upper tube ( 13 ), a control handle ( 9 ) and an upper nest ( 2 ) that are fixed on the bottom of the lower tube ( 11 ) and on the top of the upper tube ( 13 ) respectively, a lower nest ( 3 ) that is sleeved glidingly on the exterior of the upper tube ( 13 ), a rib assembly ( 4 ) that is centered between the upper nest ( 2 ) and the lower nest ( 3 ), a spring for closing ( 5 ) tied to the rib assembly ( 4 ), a raising inner tube ( 6 ) that is encased inside of the umbrella shaft, a spring for opening ( 7 ) that is slided outside of the raising inner tube ( 6 ) but inside of the shaft, a dragline ( 8 ) that is used to tense the lower nest ( 3 ) and prevent it sliding downwards when the umbrella is open, the dragline ( 8 ) is circled on the assembly pulley of the upper nest ( 2 ) and lower nest ( 3 ), whose one end is fixed on the upper nest ( 2 ) and the other end is tied to a step-cone ( 81 ) through the raising inner tube ( 6 ); it is characterized in that: 
 the bottom of the handle body ( 91 ) of the said control handle ( 9 ) is joined fixedly with the bottom of the lower tube ( 11 ), a button hole is provided on the sidewall of the upper part of the handle body ( 91 ), and a button ( 92 ) with a reset spring ( 925 ) and a snap convex ( 924 ) is installed in the button hole, a rocker that is hinged with the handle body ( 91 ) under the button hole and also equipped with the push spring ( 935 ) lock or release the step-cone ( 81 ) that is tied to the end of the dragline ( 8 ), and a movable ring ( 94 ) with the lifting spring ( 942 ) is around the upper part of the said rocker ( 93 ) and the lower part of the lower tube; 
 wherein after the umbrella is closed and the shaft is in the state of compression, the snap convex ( 924 ) of the said button ( 92 ) falls into the locking recess ( 131 ) on the lower part of the upper tube ( 13 ), the said movable ring ( 94 ) is forced downwards by the bottom of the middle tube ( 12 ) and staggers with the button ( 92 ), and the said rocker ( 93 ) locks the step-cone ( 81 ) that is tied to the dragline ( 8 ); 
 when the said button ( 92 ) is pressed, it will move inwards but will not touch the rocker ( 93 ) and the said snap convex ( 924 ) will depart from the locking recess ( 131 ) on the lower part of the upper tube ( 13 ), and the umbrella will be unfurled under the action of the spring for opening ( 7 ), the said step-cone ( 81 ) is still locked by the rocker ( 93 ) so as to tighten the said dragline ( 8 ) to prevent the lower nest ( 3 ) from sliding downwards, and the movable ring ( 94 ) moves upwards to the position that can be touched by the button ( 92 ) under the action of lifting spring ( 942 ); 
 when the button ( 92 ) is pressed again, it will push the movable ring ( 94 ) inwards and drive the said rocker ( 93 ) to rotate to release the step-cone ( 81 ), so the said lower nest ( 3 ) loses support and the spring for closing ( 5 ) pulls the rib assembly ( 4 ) to push the lower nest ( 3 ) downwards back to the state of closing umbrella. 
 
   
   
     2. The automatic device for opening or closing multi-folding umbrella according to  claim 1 , is characterized in that: the lower part of the said handle body ( 91 ) has a bushing ( 911 ) that can be spliced with the bottom of the lower tube ( 11 ), and a cavity ( 912 ) is provided on the side wall of its upper part, which can hold the button ( 92 ), a button guide groove ( 913 ) is positioned in the inner wall that is corresponding to the button hole, on the bottom of the center of the guide groove is a seat of the reset spring ( 914 ) disposed, an aperture ( 915 ) whose diameter is bigger than the radial size of the lower part of the upper tube ( 13 ) is placed on the top of the handle body ( 91 ), a seat of the lifting spring ( 916 ) is mounted on its middle part, a through groove ( 917 ) is opened below the button hole, which can hold the through groove ( 917 ) that can allow the rocker ( 93 ) hinged on the handle body ( 91 ) to swing from side to side, and a seat ( 918 ) of the push spring ( 935 ) is mounted in the through groove ( 916 ). 
   
   
     3. The automatic device for opening or closing multi-folding umbrella according to  claim 1  or  claim 2 , is characterized in that: the said step-cone ( 81 ) can slide up and down freely in the seat of opening spring ( 71 ) that is fixed inside of the bottom part of the lower tube ( 11 ), and on the said seat of opening spring ( 71 ) and the sidewall of the lower tube ( 11 ) is provided a slot, which can be used for the rocker ( 93 ) to extend into the seat of opening spring ( 71 ) to lock the said step-cone ( 81 ). 
   
   
     4. The automatic device for opening or closing multi-folding umbrella according to  claim 1  or  claim 2 , is characterized in that: the said button ( 92 ) has a tabular body ( 921 ) that has the same radian as the exterior wall of the handle body ( 91 ) and the middle part of the tabular body extends inwards to form a ring ( 922 ), the bulge ( 923 ) joining the reset spring ( 925 ) is equipped on the exterior wall of the ring on the bottom of the button ( 92 ), the said snap convex ( 924 ) is mounted in the interior wall of the ring at the bottom of the button ( 92 ). 
   
   
     5. The automatic device for opening or closing multi-folding umbrella according to  claim 1  or  claim 2 , is characterized in that: the middle part of the rocker ( 93 ) is articulated in the through groove ( 916 ) on the handle body ( 91 ) by the pin ( 931 ), a flange ( 932 ) that locks the step-cone ( 81 ) is equipped on the inner edge of the lower part of the rocker, and a bulge ( 933 ) rabbeted the push spring ( 935 ) is positioned on the outer edge of its lower part, and its upper part is the swing arm ( 934 ) joined with the movable ring ( 94 ) glidingly. 
   
   
     6. The automatic device for opening or closing multi-folding umbrella according to  claim 1  or  claim 2 , is characterized in that : the said movable ring ( 94 ) is located under the button guide groove ( 913 ) in the cavity ( 912 ) on the handle body ( 91 ) and also sleeved glidingly on the lower tube ( 11 ), the inner hole of the movable ring ( 94 ) appears elongated forming that is consistent with the moving direction of the button ( 92 ), one end of the elongated hole has a notch ( 941 ) that can hold the swing arm ( 934 ) of the rocker ( 93 ) and the lifting spring ( 942 ) is pre-compressed under the movable ring ( 94 ). 
   
   
     7. The automatic device for opening or closing multi-folding umbrella according to  claim 1  or  claim 2 , is characterized in that: the locking recess ( 131 ) on the exterior wall of the said upper tube ( 13 ) is formed by stamping, and its lower margin appears the inclined plane outward protrusion slightly that slightly protrudes from the wall of the upper tube. 
   
   
     8. The automatic device for opening or closing multi-folding umbrella according to  claim 1 , is characterized in that: the said umbrella is four-folding or five-folding umbrella and the said shaft ( 12 ) is two segments or three segments. 
   
   
     9. The automatic device for opening or closing multi-folding umbrella according to  claim 1 , is characterized in that :one end of the said dragline ( 8 ) is tied to the upper nest ( 2 ) after having rounded the double assembly pulley fixed on the upper nest ( 2 ) and the lower nest ( 3 ) through the top of the upper tube ( 13 ), two pulleys are positioned on the upper nest ( 2 ), wherein, one is the rewinding pulley that is mounted in the hole on the top of the upper nest ( 2 ) and whose two channels are positioned on the side of the top of the upper nest ( 2 ), the other is the guide pulley that is placed on the pulley seat in the upper part of the upper nest ( 2 ), one channel of which is at the central line of the upper nest ( 2 ) and the other one is under the rewinding pulley. 
   
   
     10. The automatic device for opening or closing multi-folding umbrella according to  claim 9 , is characterized in that: on the side of the said lower nest ( 3 ) are provided the upper and lower rewinding pulleys whose channels are on the side of the lower nest ( 3 ).